Unrated severityOSV Advisory· Published Aug 2, 2026· Updated Aug 3, 2026
better-auth passkey before 1.4.0 IDOR via delete-passkey
CVE-2025-71400
Description
better-auth passkey versions before 1.4.0 contain an insecure direct object reference vulnerability in the passkey deletion endpoint that allows authenticated users to delete arbitrary passkeys by ID. Attackers with valid sessions can submit crafted requests to the delete-passkey endpoint with enumerated passkey IDs to remove other users' passkeys.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2v1.4.0-beta.27, v1.4.0-beta.26, v1.4.0-beta.25, …+ 1 more
- (no CPE)range: v1.4.0-beta.27, v1.4.0-beta.26, v1.4.0-beta.25, …
- (no CPE)range: <1.4.0
Patches
Vulnerability mechanics
References
2- github.com/better-auth/better-auth/security/advisories/GHSA-4vcf-q4xf-f48mmitrevendor-advisory
- www.vulncheck.com/advisories/better-auth-passkey-before-idor-via-delete-passkeymitrethird-party-advisory
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